update readme.md

README.md

@@ -19,18 +19,18 @@ The individual blocksize needs to be experimental evaluated for each individual
 
 # Before compilation
 
-To explicitly ensure, that CMake will use the GNU compiler use:
+To explicitly ensure, that CMake will use the Intel compiler use:
 
 ```{bash, engine='sh'}
-export CXX=g++
-export CC=gcc
+export CXX=icpc
+export CC=icc
 ```
 
-Lookup the [compiler-flag](https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html) for your hardware. Change the `-march` flag in your `CMakeLists.txt` depending on the hardware.
+Lookup the [compiler-flag](https://software.intel.com/en-us/articles/performance-tools-for-software-developers-intel-compiler-options-for-sse-generation-and-processor-specific-optimizations) for your hardware.
 
 Example configuration for Skylake processors:
 ```{bash, engine='sh'}
-set(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -std=c++11 -march=skylake -ffast-math -fassociative-math -O3 -fopenmp -lmkl_core -lmkl_intel_lp64 -lmkl_intel_thread -liomp5")
+-xmic-avx512 -fpic -qopenmp -axCOMMON-AVX512 -lmemkind -lmkl_core -lmkl_intel_lp64 -lmkl_intel_thread -liomp5 -lpthread -g -debug all -save-temps -Wl, -O0 -fstack-security-check -lboost_system
 ```
 
 # Build with CMake